Zoyx Posted January 22, 2023 Share Posted January 22, 2023 I have an A/V modded Junior. Only producing black & white video. Otherwise the picture looks great. The color/B&W switch works, but it just changes the grey shading. I've tried multiple TVs/displays. I turned the 500k trimmer pot, but it had no effect. Any ideas on getting color back? Quote Link to comment Share on other sites More sharing options...
+x=usr(1536) Posted January 23, 2023 Share Posted January 23, 2023 Check continuity between pins 2 (sync) and 9 (colour) on the TIA and the Longhorn board. 1 Quote Link to comment Share on other sites More sharing options...
Zoyx Posted December 27, 2023 Author Share Posted December 27, 2023 (edited) It has been a year, but I finally got around to fixing this. The problem was the 500k trimmer pot. I bought a new one from this link. I desoldered the old one and plugged this one in. The new one was slightly bigger, so some minor bending, and it was in. Resoldered, then I had to do some dialing-in with a small screwdriver while it was running. I used Frogger for the fine-tuning. Edited December 27, 2023 by Zoyx Quote Link to comment Share on other sites More sharing options...
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